I tried to use various LLMs to go through my Instapaper stuff. It was probably 6-12 months ago and it didn't like any of my attempts.

However, I did still find one-off AI summaries to be very helpful in getting through the backlog to get me down to 0. I now stay at 0. If there is a long article I don't feel like reading, but want to know more than the headline, I will use the AI summary in my browser. That's usually good enough to absolve the guilt, without creating more guilt by adding something to the reading list.